Home / 39,580.21-54,620.64-21,675.56

Finding the Fourth Proportional to 39,580.21, 54,620.64 and 21,675.56

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Solution

The fourth proportional to 39,580.21, 54,620.64 and 21,675.56 is: 29,912.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,580.21 : 54,620.64 = 21,675.56 : x
  2. Step 2: Convert to fraction form
    39,580.21/54,620.64 = 21,675.56/x
  3. Step 3: Cross multiply
    39,580.21x = 54,620.64 × 21,675.56
  4. Step 4: Simplify right side
    39,580.21x = 1,183,932,959.56
  5. Step 5: Solve for x
    x = 1,183,932,959.56/39,580.21
  6. Step 6: Final answer
    x = 29,912.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.